Memory Clock - NEC Express5800/R120b-1 User Manual

9-28 Upgrading Your Server

Memory Clock

The DR3-800/1066/1333MHz memory clock frequencies are supported, but this depends on the
CPU and memory configurations.
Note that all bus memory clocks operate at the same clock frequency.
Memory drive voltage: Low (1.35V/power-saving mode)
Automatically shifts
to 1.5V operation
Operates on an 800MHz
memory clock
Memory drive voltage: Normal (1.5V)
How many DIMMs have been
installed per memory channel?
2
Operates on an 800MHz
memory clock
<Example>
Operates at 800MHz
CPU1_DIMM1
16GB
CPU1_DIMM2
4GB
CPU1_DIMM3
4GB
Y
Is the onboard CPU Xeon
E5503/E5506?
Y
Has an additional 16GB
memory stick been installed?
Operates on
memory clock
Y
Is the onboard CPU Xeon
E5503/E5506?
Y
Has an additional 16GB
memory stick been installed?
Operates
memory clock
CPU1_DIMM4
4GB
CPU1_DIMM5
2GB
CPU1_DIMM6
1GB
If the onboard CPU is Xeon E5620
N
N
N
Is
L5640/X5670/X5680?
2
How many DIMMs have been
installed per memory channel?
a 1066MHz Operates on an 1333MHz memory
clock
N
N
N
1
Is
L5640/X5670/X5680?
on a 1066MHz Operates on an 1333MHz memory
clock
the onboard CPU
Y
1
the onboard CPU
Y
Operates at 1066MHz
CPU2_DIMM4
CPU2_DIMM1
16GB
4GB
CPU2_DIMM5
CPU2_DIMM2
2GB 4GB
CPU2_DIMM6 CPU2_DIMM3
1GB 4GB
XEON
XEON